Diana wasn't in a good state mentally when RTL took place. She had experienced some negative press regarding her behavior like the one at Heathrow, her marriage was ending, she was going through menopause, etc. A lot of the point of RTL was to bring back something positive from her past to help her move forward. I've always felt that if she was in the mindset she is in now back in 2000, the course of RTL would have gone much differently and she would have been more receptive to Mary and her requests.
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